You are downloading the 6 Nations AppX file v184.108.40.206 for Windows Phone. 6 Nations is a free and useful Sports app: The first independent application (unofficial), 100% free with no advertising and no sponsor, dedicated to the 6 Nations Rugby championship 2016, ... You can now download the offline AppX file to install & try it.
Download Locations for 6 Nations 220.127.116.11 AppX file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline AppX File To Install It Any More.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline 6 Nations AppX file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.